Update code/receiver/receiver.ino

code/receiver/receiver.ino

@@ -0,0 +1,57 @@
+#include <WiFi.h>
+#include <esp_now.h>
+
+typedef struct {
+  int speed;     // -255 to 255
+  int direction; // -100 to 100
+} CommandPacket;
+
+typedef struct {
+  int currentSpeed;
+  int batteryVoltage;
+  int temperature;
+} TelemetryPacket;
+
+CommandPacket command;
+uint8_t remoteAddr[] = {0x24, 0x6F, 0x28, 0x33, 0xDE, 0xB4}; // MAC of controller
+
+void onCommandRecv(const uint8_t * mac, const uint8_t *incomingData, int len) {
+  memcpy(&command, incomingData, sizeof(command));
+  // Control motors using command.speed and command.direction
+  // Example: use PWM with analogWrite to motor driver pins
+  Serial.print("Received Speed: "); Serial.println(command.speed);
+  Serial.print("Received Direction: "); Serial.println(command.direction);
+
+  // Add full motor control logic here for variable speed/direction
+}
+
+void setup() {
+  Serial.begin(115200);
+  WiFi.mode(WIFI_STA);
+  if (esp_now_init() != ESP_OK) {
+    Serial.println("ESP-NOW init error");
+    return;
+  }
+  esp_now_peer_info_t peerInfo;
+  memcpy(peerInfo.peer_addr, remoteAddr, 6);
+  peerInfo.channel = 0;
+  peerInfo.encrypt = false;
+  esp_now_add_peer(&peerInfo);
+
+  esp_now_register_recv_cb(onCommandRecv);
+}
+
+unsigned long lastTelemetrySent = 0;
+
+void loop() {
+  // Telemetry every 500 ms
+  if (millis() - lastTelemetrySent > 500) {
+    TelemetryPacket telemetry;
+    telemetry.currentSpeed = command.speed;           // You could read actual motor speed via encoder
+    telemetry.batteryVoltage = analogRead(36) * 3.3;  // Example: Replace with real voltage calculation
+    telemetry.temperature = 25;                       // Example: Replace with real temperature sensor value
+
+    esp_now_send(remoteAddr, (uint8_t*)&telemetry, sizeof(telemetry));
+    lastTelemetrySent = millis();
+  }
+}